FOR IMMEDIATE RELEASE:

April 17, 2007

AUSTRALIAN SUBSIDIARY PLANS FINANCING AND INTERSECTS SULPHIDE MINERALIZATION IN PRELIMINARY DRILLING

Tri Origin Exploration Ltd. (TOE: TSX-V) reports that its 53.9%-owned Australian subsidiary Tri Origin Minerals Ltd. (TRO) has requested that that the Australian Stock Exchange (ASX) halt trading in its shares until a capital raising is finalized later this week. In addition, TRO has intersected sulphide mineralisation in the first exploration hole completed as part of a program announced on April 12^th in the Woodlawn District, New South Wales. The hole targeted a geophysical response located approximately 5 kilometres northwest of the past-producing Woodlawn Mine which had not been previously drilled. TRO is currently evaluating the significance of this intersection and is continuing with the recently announced feasibility study at the Woodlawn Underground Project and with its regional exploration program.

The News Releases as issued by TRO to the Australian Stock Exchange (ASX) is as follows:

Dear Ms Roberts

RE: trading halt

I refer to our earlier telephone conversation and now confirm our request for a trading halt in our Company’s shares until Thursday morning 9.30am, 19 April 2007 pursuant to listing rule 17.1.

The Company is currently finalizing a capital raising.

The company is not aware of any reason as to why this trading halt should not be granted.

RE: WOODLAWN EL6493 SULPHIDE MINERALIZATION DISCOVERY

The Directors of Tri Origin Minerals Ltd (“TRO”) are pleased to announce that the first drill hole of a two hole programme (~600 m) has intersected a significant width of pyrite rich sulphide mineralization.

The mineralization is a new discovery approximately 5 km northwest of the Woodlawn deposit. It is within a belt of prospective Silurian rocks controlled by TRO and extending for approximately 60 km. This hole intersected mineralization located within a targeted coincident electromagnetic and geochemical anomaly. . Geological inspection indicates the mineralization is of skarn-replacement style and hosted in limestone. The location of this hole and the geological setting is outlined in the 12 April release.

Disseminated to locally massive pyrite +/-sphalerite, galena and chalcopyrite mineralization was intersected from 208-215.8 m (7.8 m down hole thickness). No information is available at this stage on the orientation of the mineralization.

Details of the drill hole are:

Drill hole No: WLT001

Total Depth:               280.8 m

Location:                    6119450mN(AMG)   729650mE(AMG)

Inclination:                  -60 degrees

Azimuth:                     214 degrees magnetic

The core is being prepared for assay. The Company will further report on these results when the assays have been received.

In accordance with the Australian Stock Exchange Limited Listing Rules Appendix 5A, the information in this report that relates to Exploration Results and Mineral Resources is based on information compiled by Mr. David Hobby, an employee of the Company, who is a Member of The Australasian Institute of Mining and Metallurgy.

Mr. Hobby has sufficient experience which is relevant to the style of mineralization and type of deposit under consideration and to the activities which he is undertaking to qualify as a Competent Persons as defined in the 2004 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’. Mr. Hobby consents to the inclusion in the report of the matters in the form and context in which they appear based on information derived from his technical work.

This news release can be publicly accessed at www.asx.com.au under Listed Company Documents filed by Tri Origin Minerals Ltd. TRO’s reporting of mineral resources, exploration results and qualifications of competent persons are in accordance with the 2004 Edition of the Australasian Code for Reporting of Exploration Results and the JORC Code of December 17, 2004. Although these codes may differ in some regards to Canadian Standards including NI 43-101, it is the opinion of TOE management that statements made in the TRO report are, in all material regards, compliant with NI 43-101.

For further information please contact:

Tri Origin Exploration Ltd.

Dr. Robert Valliant, President

Tel: (905) 294-9942

Web page: www.triorigin.com

E-mail: invest@triorigin.com

Tri Origin Exploration Ltd. is publicly listed on the TSX Venture Exchange under the trading symbol TOE.

Tri Origin has leveraged exposure to mineral discoveries in Australia through its 53.9% equity interest in its subsidiary, Tri Origin Minerals Ltd., a publicly traded company listed on the Australian Stock Exchange under the symbol TRO.